Since I play in the sugar bowl, I often have to send my pix to SBs. There are providers who like to see client photos as well. A few rules that I follow:
1. Don't post your photos on any P4P site, whether it's a sugar site or P411. You have no idea who's looking at your profile. And the site can be hacked.
2. Only send photos to an SB/provider who has made personal contact with you, either by text or e-mail.
3. Don't send any photo of you that's already online, like on social media sites (e.g., Facebook, Instagram, etc). The SB/provider will probably do a google/tineye image search on your photo. If that same photo is on your Facebook page, she'll get an "image hit" link to your Facebook page. Now she knows your identity and *everyone* you've friended.
4. As you stated above, send "G rated" pix only that are recent photos, and provide her with the dates they were taken. Then ask her if she's using current photos.
5. If she can verify you with your pix, then you've done something wrong. Hopefully her request for your pix is just part of her screening process. Typically SBs/providers feel more at ease about a first meeting when they have a general idea of what you look like. In the sugar bowl, trading pix is SOP. --