By Lauren Haughey A budget-savvy mum has hit back at haters who mock her for buying kids’ clothes and pressies in charity shops. Looking for the perfect birthday gift for your kids can stressful; juggling the pressure of finding something that looks expensive, but won’t break the bank, while making sure it’s not too generic and tailored to their personality is no mean feat. But thrifty Fran Ramsden says you can simply solve this problem with a quick stop to the charity shop, where she’s bagged cheap items that could sell for thousands. And while trolls online have cruelly labelled her a ‘cheap…