There's nothing on this that rises above the level of message board rumor.
However, prior to her commitment there were posts on an Iowa forum saying that she had committed and that it was not to Iowa and it was all over but the official announcement. Then, a day or two before she announced, the same poster reversed course and said she had changed her mind and was committing to Iowa.
There were also posts on McGraw's Bench after she committed to Iowa that told the same story: Clark had told ND coaches she was coming and then changed her mind and chose Iowa.
Could be total nonsense, of course. The only reason I put some stock in the rumor is that ND and Deja Kelly had mutual interest throughout that recruiting cycle (and she and her mom liked tons of pro-ND tweets) only for Deja to commit to UNC without taking an official visit to ND. So the rumor that Kelly was told there was no room at ND because Clark was coming makes sense to me. With 0 inside information, I believe Kelly would have chosen ND if Clark had decided on Iowa early.
Anyhow, it's all water under the bridge because there's no way Miles chooses ND if Clark is there and Miles has already claimed credit for recruiting Citron to play with her in college. There's a good chance that Miles and Citron are at Stanford or something if Clark chooses ND.