I need someone close to Dursleys but not to Marge

You think hard and then it clicks on you. There is a person who helped you whenever the Dursleys left. She does make you cookies and treats you nicely, during your puberty ages she gave a box of tissues and pictures from her younger days. Those were hot but time has passed a lot and she's now an old woman who lives as your neighbour.

You seem to forget her name but you then recall it, it is...

Mrs Figg, the squib! She was stationed there because Dumbledore ordered her to keep you safe. She is somewhat an oddball and enjoys voyeurism. At nights when you are horny enough for even Hedwig, she would leave her blinds open and would display all of her assets. She also would do that on other days as well.

You are wondered why you thought it would be okay, then you remember the photo she showed during her younger years.

But now isn't the time you check if she's hot, you need her help. You go back to your room to check if she's still there and.

Yup. Still naked... you then proceed downstairs and excuse yourself to collect materials before Marge calls you,

"Hey mutt, come here. This is my medication I need soon but I forgot to resupply, my doctor, gave it to the woman in this address. make sure you get it or else!"

You grunt in agreement and you check the address. It was Mrs Figg's address! Maybe there is a silver lining after all.