Heidi, who won the 2007 English girls U15 title, hit fine form in both her matches. She was round in level par in her first round match and was two-under when she defeated Durham girls champion Rebecca McGinley on the 14th.
She now plays her friend and number two seed Abbey Gittings from Walmley, Warwickshire. Next week Heidi will be on duty for England in the Girls International Matches at Panmure, Scotland.
Meanwhile, Kents Sian Evans (Faversham) knocked out top seed Jessica Wilcox of Blankney, Lincolnshire, with a 2/1 win in the second round.
We both played really well, said Sian who made a crucial breakthrough in the tight match with birdies on the 14th and 15th. They took her to 2up and although she lost the 16th she closed out the match with an impressive par on the 17th where she got up and down from 60 yards.
Cheshires Charlotte Wild (Mere) continued her good season by beating girl international Holly Clyburn 3/2 in the second round.
Already this season Charlotte has retained the Cheshire girls championship, won the Northern Foursomes and been third in the Irish strokeplay championship.
The other quarter finalists are Rachael Goodall (Heswall),Nikki Dunn (Harrogate), Sarah Tyson (Redlibbets) and Giorgina Brown (Mere) who won both her matches on the 19th.
Play in the second flight matches was suspended when torrential rain flooded the greens. The players will return at 7.30am to complete their matches.
First round results
Jessica Wilcox (Blankney) beat Chloe Dexter (Beedles Lake) 4/3.
Sian Evans (Faversham) beat Hannah Lovelock (Hindhead) 4/2
Holly Clyburn (Woodhall Spa) beat Emma Carberry (Highwoods, Bexhill) 4/3
Charlotte Wild (Mere) beat Ellie Robinson (Middlesborough) 2/1
Rachael Goodall (Heswall) beat Kim Bradbury (Cavendish) 4/2
Rachel Woodcock (Blankney) beat Harriet Wilson (Heswall) 7up
Nikki Dunn (Harrogate) beat Jessica Bradley (Tiverton) 1 up
Daisy Dyer (Chigwell) beat NikkiFoster (Accrington & District) 1 up
Sarah Tyson (Redlibbets) beat Kayleigh Cann (Yelverton) 4/2
Kim Crooks (Saltburn by the Sea) beat Nicola Rawlinson (Leyburn) 4/3
Melissa McMahon (Yeovil) beat Jenna Birch (Royal Lytham & St Annes) 2/1
Giorgina Brown (Mere) beat Siobhan Richards (Owston Hall) at 19th
Heidi Baek (Felixstowe Ferry) beat Emma Clegg (Wilpshire) 2/1
Rebecca McGinley (South Moor) beat Katie Burman (John OGaunt) 4/3
Bronwyn Davis (Wolstanton) beat Melissa Siviter (Enville) 6/5
Abbey Gittings (Walley) beat Elizabeth Over (Forest Pines) 2/1
Evans beat Wilcox 2/1
Wild beat Clyburn 3/2
Goodall beat Woodcock 3/2
Dunn beat Dyer 1 up
Tyson beat Crooks 3/2
Brown beat McMahon at 19th
Baek beat McGinley 5/4
Gittings beat Davis 4/3
Quarter final draw:
Sian Evans v Charlotte Wild
Rachael Goodall v Nikki Dunn
Sarah Tyson v Giorgina Brown
Heidi Baek v Abbey Gittings