As it stands, there are 329 Conservative MPs, and the support of 433 MPs is needed. There are 231 Labour MPs, 54 Krankies and 32 others (excluding the bomb-slingers, who don't take their seats). If TM wanted an early election and had the backing of all her MPs, I think she would struggle to get the backing of other MPs (104 required).
The Krankies have 54 out of 59 seats in Scotland, so there isn't much for them to gain. As they are pro-remain, I doubt they would want to risk losing Labour MPs, who are more likely to vote against the government. Most Labour MPs know they have nothing to gain in a general election; 191 of the current MPs voted no confidence in Corbyn, and they know they will get annihilated while that prat is the leader, so they are unlikely to risk their seats.