There is no anal sex in this scene but there is a lot of anal play -- rimming, asshole worship, and fingering.

14:55 - "You can stick your finger more in"
37:47 - "You can put it in further if you want"
40:37 - "Did you get to come yet?" "Not yet, but I almost did when your finger was in my ass"
42:10 - "You can try two fingers if you want"
47:15 - "Can I try two fingers?" "How many?" "Two" "Yeah" (the eagerness when she responds is very sexy)

[Link]

But there is a scene from much earlier in her career with Mark Ashley titled "O brother where art thou". It is included in Teenage Sexaholics and also as a bonus scene in It's a Daddy Thing 3. She looks incredibly hot, still all natural, and has her hair up in pigtails as she seduces him out of the shower.

At around 15:30, Lela is riding him balls deep, and Mark slips his middle finger into her asshole, really digging in there, takes it out and replaces it with his ring finger. Then he puts both in, working them down to the knuckles and uses the grip like a bowling ball to fuck her harder. (the screens don't really do it justice, it's one of her best scenes)

[Link]