Crime of attempt

Michelle needed money to pay her rent. She is behind 3 months in rent and fears being evicted. She decides to rob Capital One Bank. Michelle asks her roommate Cheryl to help her. They agree to split the money 60% Michelle and 40% for Cheryl. This was based on the fact that Cheryl was going to only purchase the items necessary to commit the crime, like the gun and ski mask, and agreed to be the lookout at the bank. Cheryl purchased a gun and ski mask early in the week. Midweek, she stopped into the local pub for a few drinks. She began telling the bartender about her plan to get money. The bartender said nothing. Later that week, before the robbery was to take place, Michelle and Cheryl went to get their nails done. While at the nail salon, they were arrested. As the prosecutor, with what crimes can you charge Michelle and Cheryl? Do their actions constitute the crime of attempt? Discuss why or why not. Use legal reasoning to support your response.