I'm glad you worked it out - don't let anyone con you into thinking that a 'super rare white symbol peachy' is worth anything!
As far as I know, hoof markings don't make a lot of difference, she's still only worth $3 or less mint. The hoof markings may indicate if she was the regular release with the Grooming Parlour, or the later Mail Order 'Playset Ponies' release (if one set of markings says China, it usually means its later)
However, if you have the flat footed version (doesn't have the sunken 'dimple' under the soles of the feet then she is worth more but they don't turn up often. I wouldn't get excited though, I would say max $15 on a Flat Foot Peachy, unless anyone has a better valuation, as Ive only seen a couple?
Hope that helps!
Jem