<human>: Give me the gist of the text in a nutshell

Ok so i'll be brief.

Basically my SO has a mother that is a bit on the overprotective/smothering side. They love each other to bits and I value that there is a lot of respect for family within this relationship as it is something I value very highly. When we first started dating (6 months ago) he told me how much she loves me. We exchange recipes, books we even did christmas presents. I'm a person that parents generally tend to enjoy having around. 

Within the past couple of days though I've been getting a weird vibe from her. His dad was asking me to show him the necklace he got for me for christmas and the dad said to the mom "Chip off the old block eh honey?" and she just looked over without saying anything... and went back to watching t.v. He spent a lot of money on my present and I got the feeling she was a little jealous?

Also the other day I brought over cookies my mom had made. I heard the dad ask her to ask me for the recipe and she just looked at him and turned away. Everyone loved the cookies and they all got eaten that day.

I haven't been acting any differently around her or done anything different but I'm definitely getting a weird vibe from her. How do I keep her from being jealous? Her son is literally her life she loves being a mom and I have a lot of respect for her but i don't really know what to do. Perhaps I'm overreacting?
<bot>: Getting the feeling overprotective mother is starting to get jealous of me despite her consistently telling me how much she likes me.